Cascaded H-bridge multilevel converter topology and three-phase balance control for large scale photovoltaic systems

Sebastian Rivera*, Bin Wu, Samir Kouro, Hong Wang, Donglai Zhang

*Autor correspondiente de este trabajo

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

79 Citas (Scopus)

Resumen

The increase in the power levels of photovoltaic (PV) energy conversion systems has resulted in new large-scale grid connected configurations that have reached the megawatt level. This substantial increment in the power levels imposes new challenges to the grid interfacing converter, and therefore results in new opportunities to be explored. This work introduces a new medium voltage multilevel scheme based on a three-phase cascaded H-bridge (CHB) converter and multiple PV strings. The proposed configuration enables a large increase of the total power capacity of the PV system, while the introduction of a multilevel converter helps to improve both power quality and efficiency and medium voltage operation at the grid side. The main challenge of the proposed configuration is to handle the inherent power imbalances that occur not only between the different cells of one phase of the converter but also between the three phases. Simulation results of a 7-level CHB PV system are presented to validate the proposed topology and control method.

Idioma originalInglés
Título de la publicación alojadaProceedings - 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012
Páginas690-697
Número de páginas8
DOI
EstadoPublicada - 2012
Evento2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012 - Aalborg, Dinamarca
Duración: 25 jun. 201228 jun. 2012

Serie de la publicación

NombreProceedings - 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012

Conferencia

Conferencia2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012
País/TerritorioDinamarca
CiudadAalborg
Período25/06/1228/06/12

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